So mark your calendars and prepare to save big!
Specifically, it seems like a card from the soon-to-release set MTG Foundations is driving the spike
What to Change Out: 2 Courageous Goblin 1 Bulk Up 2 Felling Blow 2 Axgard Cavalry 2 Giant Cindermaw 2 Skyraker Giant 2 Mild-Mannered Librarian 2 Eager Trufflesnout In: 1 Halana and Alena, Partners R 1 Ashroot Animist R 2 Ruby, Daring Tracker U 1 Nessian Hornbeetle U 1 Garruk's Uprising U 1 Llanowar Elves C 3 Tiger-Dillo U 3 Outcaster Trailblazer R 2 Cactusfolk Sureshot U Total wildcards needed : 0 Mythic Rare, 5 Rare, 9 Uncommon, 1 Common
One of Fairy's best ace monsters, which stands out for the unreasonableness of the predecessor Valhalla Chris
Tamiyo's Safekeeping No, But More Politely Protection for one mana is almost always worth running
For example, if two or more effects attempt to modify how many counters would be put onto a permanent you control, you choose the order to apply those effects, no matter who controls the sources of those effects